ARM: 8153/1: Enable gcov support on the ARM architecture

ARM: 8153/1: Enable gcov support on the ARM architecture

Enable gcov support for ARM based on original patches by David
Singleton and George G. Davis

Riku - updated to patch to current mainline kernel. The patch
has been submitted in 2010, 2012 - for symmetry, now in 2014 too.

https://lwn.net/Articles/390419/
http://marc.info/?l=linux-arm-kernel&m=133823081813044

v2: remove arch/arm/kernel from gcov disabled files

Cc: Andrey Ryabinin <[email protected]>
Cc: Naresh Kamboju <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Riku Voipio <[email protected]>
Signed-off-by: Vincent Sanders <[email protected]>
Signed-off-by: Russell King <[email protected]>